CN103527159A - Prearranged downhole throttling device - Google Patents
Prearranged downhole throttling device Download PDFInfo
- Publication number
- CN103527159A CN103527159A CN201310505869.7A CN201310505869A CN103527159A CN 103527159 A CN103527159 A CN 103527159A CN 201310505869 A CN201310505869 A CN 201310505869A CN 103527159 A CN103527159 A CN 103527159A
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- CN
- China
- Prior art keywords
- throttling device
- prearranged
- type underground
- set type
- downhole throttling
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention relates to a downhole throttling device prearranged in an oil well. The prearranged downhole throttling device comprises a body. The body is provided with a clamping claw. One end of the clamping claw is connected to the body, and the other end of the clamping claw is connected to the body through a locking fastener. A protruding stop ring is arranged on the lower portion of the locking fastener. The prearranged downhole throttling device is simple in structure and high in practicality.
Description
Technical field
The present invention relates to a kind of underground throttle device being preset in oil well.
Background technology
In natural gas extraction, for step-down, throttling, limited production, conventionally at pit shaft, underground throttle device is installed, underground throttle device is to set mode with being divided into again slip-type underground throttle and presetting system downhole choke.At present, what revive Sulige gas field extensive use is slip-type underground joint device, and large-area applying shows: this restriction choke is difficult to be salvaged, and easily becomes down-hole accident.Pre-set type underground throttling device cartridge distortion is little, and sealing reliability is good, and the life-span is long, once and cartridge depart from preset seating nipple, its external diameter is just less than folding latus rectum, while carrying in salvaging almost without frictional resistance, easily salvaging.But the input need of work of pre-set type underground throttling device is by wire rope G.I.H, and required vehicle is many, personnel are many, and complicated operation, and input expense is high.Introduced herein, at the scene successful Application.
Summary of the invention
The present invention proposes a kind of pre-set type underground throttling device of exempting from rope releasing type.
A kind of pre-set type underground throttling device of the present invention, comprises body, and body is provided with claw, and described claw one end is connected on body, and the other end is connected by snap close with body, and the bottom of snap close is provided with outstanding baffle ring.
A kind of pre-set type underground throttling device of the present invention, simple and practical property is strong.
Accompanying drawing explanation
Fig. 1 is syndeton schematic diagram of the present invention.
1-body in figure; 2-claw; 3-snap close; 4-baffle ring.
The specific embodiment
A kind of pre-set type underground throttling device of the present invention, comprises body 1, and body 1 is provided with claw 2, and described claw 2 one end are connected on body 1, and the other end is connected by snap close 3 with body 1, and the bottom of snap close 3 is provided with outstanding baffle ring 4.
During work, the seizure throw in catcher that pre-set type underground throttling device is housed is arranged on well head, open tubing valve, pre-set type underground throttling device is dropped in well, claw 2 is in tightening up state, body 1 relies on self gravitation descending smoothly, while arriving preset seating nipple position, the outstanding baffle ring 4 of body 1 is just stuck in the necking down of preset seating nipple and stops descending, then unload seizure throw in catcher, the seizure throw in catcher that lower hammer is housed is arranged on well head, open tubing valve, lower hammer is dropped in well, instantly in the time of on the baffle ring 4 of hammer chance pre-set type underground throttling device, fishing head moves down with respect to pre-set type underground throttling device under the effect of inertia force, now snap close 3 is cut off, claw 2 stretches out, be stuck in preset seating nipple draw-in groove, completed the input of pre-set type underground throttling device.
Claims (1)
1. a prefabricated underground throttle device, comprise body (1), it is characterized in that body (1) is provided with claw (2), described claw one end is connected on body (1), the other end is connected by snap close (3) with body (1), and the bottom of snap close is provided with outstanding baffle ring (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310505869.7A CN103527159A (en) | 2013-10-24 | 2013-10-24 | Prearranged downhole throttling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310505869.7A CN103527159A (en) | 2013-10-24 | 2013-10-24 | Prearranged downhole throttling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103527159A true CN103527159A (en) | 2014-01-22 |
Family
ID=49929467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310505869.7A Pending CN103527159A (en) | 2013-10-24 | 2013-10-24 | Prearranged downhole throttling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103527159A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374532A (en) * | 2019-07-10 | 2019-10-25 | 中国石油天然气股份有限公司 | Horizontal well plunger underground positioning device and positioning method thereof |
-
2013
- 2013-10-24 CN CN201310505869.7A patent/CN103527159A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374532A (en) * | 2019-07-10 | 2019-10-25 | 中国石油天然气股份有限公司 | Horizontal well plunger underground positioning device and positioning method thereof |
| CN110374532B (en) * | 2019-07-10 | 2022-06-03 | 中国石油天然气股份有限公司 | Horizontal well plunger underground positioning device and positioning method thereof |
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Application publication date: 20140122 |
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